• detrimental effect of replication crisis on perceived trustworthiness (Anvari and Lakens 2018; Wingen, Berkessel, and Englich 2020)
  
  
  
• community: increase transparency and reproducibility (Lindsay 2015; Vazire 2018)
  
  
  

• detrimental effect of replication crisis on perceived trustworthiness (Anvari and Lakens 2018; Wingen, Berkessel, and Englich 2020)
  
  
  
• community: increase transparency and reproducibility (Lindsay 2015; Vazire 2018)
  
  
  
• journals: badges to signal adherence to open science practices (OSP) (list see https://www.cos.io/initiatives/badges)
  
  
  
• effectiveness to foster the implementation of OSP (Kidwell et al. 2016)
  
  
  
  

• detrimental effect of replication crisis on perceived trustworthiness (Anvari and Lakens 2018; Wingen, Berkessel, and Englich 2020)
  
  
  
• community: increase transparency and reproducibility (Lindsay 2015; Vazire 2018)
  
  
  
• journals: badges to signal adherence to open science practices (OSP) (list see https://www.cos.io/initiatives/badges)
  
  
  
• effectiveness to foster the implementation of OSP (Kidwell et al. 2016)
  
  
  

  not much is known on the effects of badges at an individual level such as trust  

• Study 1: Undergraduates (pre-service teachers)
  • \(N\) = 270
  • age: \(M\) = 22.9 (3.0); semester: \(M\) = 5.9 (3.7)
    
    
• Study 2: Social Scientists
  • \(N\) = 250
  • position: \(Mo\) = graduate research assistant or postgraduate researcher;
    age: \(Mo\) = younger than 35 years
    
    
• Study 3: General Public (UK)
  • \(N\) = 257
  • cross quota (based on census) of sex, age, qualification

Measures:
Integrity subscale of epistemic trust (Hendriks, Kienhues, and Bromme 2015)
\(\omega\) = .83-.92

Preregistered:

approximate adjusted fractional Bayes factors (Gu, Mulder, and Hoijtink 2018; Hoijtink et al. 2019)

BF against \(H_0 = 3.5*10^7\), \(H_2 = 4.5*10^1\), \(\overline{H_1} = 4.8*10^3\), \(H_u = 5.5\)
\(d_{GB/CC} = .32\), \(d_{CC/CB} = .29\), \(d_{GB/CB} = .57\)

BF against \(H_0 = 1.6*10^{11}\), \(H_2 = 7.5\), \(\overline{H_1} = 8.0*10^2\), \(H_u = 5.4\)
\(d_{GB/CC} = .55\), \(d_{CC/CB} = .25\), \(d_{GB/CB} = .77\)

BF against \(H_0 = 3.2\), \(H_1 = 5.8\), \(\overline{H_2} = 18.5\), \(H_u = 18.5\)
\(d_{GB/CC} = .21\), \(d_{CC/CB} = -.02\), \(d_{GB/CB} = .20\)

• formr
• badges CC-BY-SA